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Appearance
|
Grayish-white to yellowish powder
|
|
Assay (as Fe)
|
Min 20%
|
|
Chloride (Cl)
|
Max 0.01%
|
|
Copper (Cu)
|
Max 0.005%
|
|
Ferrous ion (Fe2+)
|
Max 0.02%
|
|
Insoluble matter
|
Max 0.02%
|
|
Nitrate (NO3)
|
Max 0.02%
|
|
Substance not precipitated by NH4OH
|
Max 0.1%
|
|
Zinc (Zn)
|
Max 0.02%
|